Call methods from classes from a vector of different classes - c++

Question

I'm using raylib to create some simple GUI elements, like Labels.
Each class has a void draw() method. For each widget, draw() needs to be called in the window mainloop. This leads to numerous draw() calls.
Instead of this, I'd like to define a DrawCalls class. This would have a std::vector containing each of the widget's draw().
Ideally widgets would be added like this
Drawcalls d;
Label foo("This is a Label", xLocation, yLocation, fontSize, font, colour);
d.addWidget(foo);
Then d.calls() would be called in the window's mainloop.
I've tried to pass the draw method as a function pointer and add it to a std::vector<void*> and then loop through the vector calling each void. Although this didn't work.
This is my code so far:
class Widget {
public:
void draw();
};
class DrawCalls {
private:
std::vector<Widget>
}
class Label : public Widget{
public:
Label(std::string text, float x, float y, float fontsize, Font font, Color colour = WHITE) {
this->text = text;
this->x = x;
this->y = y;
this->fontsize = fontsize;
this->font = font;
this->colour = colour;
}
void changeText(std::string newText) {
this->text = newText;
}
void setXY(float x, float y) {
this->x = x;
this->y = y;
}
void draw(bool draw) {
if (draw) {
DrawTextEx(this->font, this->text.c_str(), (Vector2){x,y}, this->fontsize, 0, this->colour);
}
}
protected:
std::string text;
float x, y;
float fontsize;
Font font;
Color colour;
};
class LabelWithBackground : protected Label {
public:
LabelWithBackground(std::string text, float x, float y, float fontsize, Font font, Color colour = WHITE, Color backgroundcolour = BLACK, Monopoly::padding padding = (Monopoly::padding){10, 10, 10, 10})
: Label(text, x, y, fontsize, font, colour) // Inherit from Label
{
this->backgroundcolour = backgroundcolour;
this->padding = padding;
Label::setXY((Label::x + padding.left), (Label::y + padding.top)); // Shift text over
}
void changeText(std::string newText) {
Label::changeText(newText);
}
void setXY(float x, float y) {
Label::setXY(x, y);
}
void draw(bool draw) {
if (draw) {
Vector2 measured = MeasureTextEx(Label::font, Label::text.c_str(), Label::fontsize, 0);
DrawRectangle(Label::x - this->padding.left, Label::y - this->padding.top, measured.x + this->padding.left + this->padding.right, measured.y + this->padding.top + this->padding.bottom, this->backgroundcolour);
Label::draw(true);
}
}
private:
Color backgroundcolour;
Monopoly::padding padding;
};
Thanks for any help pointing me in the right direction.